If you have two wires made out of the same material and the same thickness, one is 3-inches long and one is 6-inches long, which one has the greater resistance?
plz help!!

The equation to determine the maximum distance the spring will be compressed when the car hits it is x = \(\sqrt{(2mgh)/k}\).

When the car rolls down the hill, it gains kinetic energy equal to its potential energy at the top of the hill: mgh. This kinetic energy will be transferred to the spring upon impact with the crash barrier. The spring will compress until all the kinetic energy is stored as potential energy in the spring.

Using the conservation of energy principle, we can equate the initial potential energy of the car with the potential energy stored in the compressed spring:
mgh = (1/2)kx²

where x is the maximum distance the spring will be compressed. Solving for x, we get:
x = \(\sqrt{(2mgh)/k}\)

So, the maximum distance the spring will be compressed is dependent on the mass of the car (m), the height of the hill (h), the spring constant (k), and the acceleration due to gravity (g).

In summary, the equation to determine the maximum distance the spring will be compressed when the car hits it is x = \(\sqrt{(2mgh)/k}\).

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The insulation tester, often known as a Megger, is a device used to assess insulation resistance. For measuring insulating resistance, we utilise the following devices.

What is insulation resistance?
The insulation resistance of wires, cables, and electrical equipment is measured in ohms. It is critical to protect against electric shocks and to avoid equipment damage caused by inadvertent discharges. The insulating resistance is measured by testing and evaluating the status of the isolation (head and body.)

Direct indicating ohm metre with hand-operated DC generator

With direct indicating ohm metre and motor-driven DC generator

Direct indicating ohm metre with DC battery

Direct indicating ohm metre with a full-wave rectifier

Resistance bridge circuit with galvanometer and battery

The insulating resistance is measured using direct current voltage. We can create the DC voltage using a hand-driven dc generator or a motorised dc generator. Insulation functions as a capacitor. If the insulation quality is excellent, the capacitor will block the DC. Leakage current flowing through insulation shows inadequate insulation quality.

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Lets learn the relationship

\(\\ \rm\dashrightarrow \lambda=\dfrac{v}{\nu}\)

\(\\ \rm\dashrightarrow \nu=\dfrac{v}{\lambda}\)

\(\\ \rm\dashrightarrow \nu\propto \lambda\propto v\)

Hence.

frequency and wavelength will be. doubled also

Answer:

C

Explanation:

I would have to say C because the girl is constantly moving in the act of serving the volleyball.

A system gains 747 kJ of heat, resulting in a change in internal energy of the system equal to 176 kJ, here -571 kJ of work has been done.

Using the  First law of thermodynamics

ΔU = q + w

Here Change in internal energy ΔU = 176 kJ

And Heat gained by the system (q) = 747 kJ

With Work done being w

So, apply the formula in the given information we get

176 kJ = 747 + w

w = 176  - 747 kJ

    = -571 kJ

Here, the negative symbol denotes that the work has been done.

The study of how heat and other types of energy interact is the subject of the physics field known as thermodynamics. The effects of thermal energy on matter are specifically discussed, as well as how thermal energy is changed into and out of other types of energy.

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Answer:

Abiotic referfers to non-living and biotic factors are living or once living

Explanation:

The specific heat capacity of the metal is 32427.7 J/kg/°C if the mass of a metal is 50 gm.

The specific heat capacity of a substance is the heat required to increase the temperature of the substance of unit mass by one degree. Its SI unit is J/kg/°C.

Mass of the metal= 50 g= 0.05 kg

Temperature of the metal = 100°C

Mass of the water = 200 g = 0.2 kg

Mass of the calorimeter = 80 g =0.08 kg

Temperature of the calorimeter and water combined= 14°C

Equilibrium temperature = 70°C

Specific heat capacity of the copper = 390 J/kg/°C

Specific heat capacity of the water = 4187 J/kg/°C

Heat lost by the metal = heat absorbed by the water and calorimeter

0.05×S×(100-70) = (0.2×4187+0.08+390) × (70-14)

1.5×S = 48641.6

S= 32427.73 J/Kg/°C

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The volumetric flow rate of water flowing through a pipe is 5 L/s and the density of water is 1 kg/L. The mass flow rate is 5 kg/s. Here option A is the correct answer.

The mass flow rate of a fluid is defined as the mass of fluid passing through a given area per unit of time. It is a crucial parameter in fluid mechanics and is often used in the design of industrial processes involving the transport of fluids. The mass flow rate can be calculated from the volumetric flow rate and the density of the fluid.

In this problem, the volumetric flow rate of water through a pipe is given as 5 L/s, and the density of water is given as 1 kg/L. To determine the mass flow rate, we need to multiply the volumetric flow rate by the density of the fluid.

Therefore, the mass flow rate is:

Mass flow rate = Volumetric flow rate x Density of fluid

Mass flow rate = 5 L/s x 1 kg/L

Mass flow rate = 5 kg/s

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The driver drives at a speed of 20km/hr, then the average speed is 24km/hr.

According to the question, they traveled one kilometer at a speed of 20 kilometers per hour. The equation time = distance/speed can be used to determine how long it will take to travel this distance. Thus, the duration of the initial leg of the journey is 1/20, or 0.05 hours.

then proceeded to travel at a speed of 30 km/h for an additional distance of 1 km. Similar to the previous section, this one's travel time is 1/30, or 0.0333 hours.

Now, add the travel times for both legs to get the overall time: 0.05 + 0.0333 = 0.0833 hours.

Now, adding the distances covered in each leg of the journey to get the total distance traveled: 1 + 1 = 2 kilometers.

By dividing the total distance by the total time, we can finally determine the average speed: average speed = total distance/total time = 2/0.0833 24 km/h.

As a result, they travel at a speed of roughly 24 km/h.

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Answer:

The total distance moved by the car is 80 metres

Explanation:

Given

North = 30 meters

South = 50 meters

Required

Determine the distance

Distance is a scalar quantity and hence, the total distance is the summation of distance moved in both directions

i.e.

\(Total\ Distance = North + South\)

\(Total\ Distance = 30\ metres + 50\ metres\)

\(Total\ Distance = 80\ metres\)

Hence;

The total distance moved by the car is 80 metres

Answer:

Time taken for car to stop = 0.89 seconds (Approx.)

Explanation:

Given:

Mass of car = 1100 kg

Speed of car = 15 m/s

Impact force = 185,000 N

Find:

Time taken for car to stop

Computation:

Change in momentum of car = M(v) - M(u)

Change in momentum of car = 1100(0) - 1100(15)

Change in momentum of car = -16,500

Time taken for car to stop = I Change in momentum of car I / Impact force

Time taken for car to stop = I-16,500I / 185,000

Time taken for car to stop = 0.89 seconds (Approx.)

The time it takes for the car to stop will be 0.89 sec. Due to the external resistive force, the car will stop after some time.

The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter P. It occurs due to the applied force. Its unit is Kg m/s².

The change in the momentum of the car is given as;

\(\rm \triangle P = m(V-U) \\\\ \triangle P = 1100(0-5) \\\\ \rm \triangle P =-16,500 Kgm/s\)

The time taken for a car to stop will be;

\(I \triangle p= F\triangle t \\\\ \rm t = \frac{\triangle p }{F} \\\\ \rm t = \frac{|-16500|}{18500} \\\\ \rm t =0.89 \ sec\)

Hence the time it takes for the car to stop is 0.89 sec.

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Answer:

B

Explanation:

It becomes lighter so it rises

A plant growing towards a light source is an example of an organism of Phototropism

Explanation:

sink and fill in space..........

The wavelength is the best place for a filter to distinguish the two objects, whichever filter shows the greater difference in brightness between the two objects.

The distance between the same points in the adjacent cycles of a waveform signal propagated in space or through a wire is called as wavelength. In the case of gamma radiation (γ), infrared (IR),  ultraviolet (UV), and visible light,  the wavelength is more often described in nanometers (nm), which are units of 10-9 m, or angstroms (Å), which are units of 10-10 m.

Colours of the spectrum are also called as chromatic colours; there are also nonchromatic colours such as browns, magentas, and pinks. The term achromatic colours are sometimes applied to the black-grey-white sequence.

The eye can differentiate some 10 million colours, all of which are obtained from two types of light mixture: additive and subtractive. As the name suggests, an additive mixture involves the addition of spectral components, and a subtractive mixture concerns the subtraction or absorption of parts of the spectrum.

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Answer:

I think it's false I am not that sure

Answer:

It is False.

Explanation:

Correct

3.

True or false. The greater the distance that the plane moves from an object, the lower the force that will be applied when the action is taken.

True

Correct

False

False. The greater the distance that the plane moves from an object, the greater the force that will be applied when the action is taken.

1

Points

/ 1

Answer:

To find the volume of a rectangular object, measure the length, width and height. Multiply the length times the width and multiply the result by the height. The result is the volume. Give the result in cubic units, such as cubic centimeters.

Explanation:

Answer:

Kinetic energy is the energy possessed by an object due to its motion. If an object is moving, then it has kinetic energy. The amount of kinetic energy depends on mass and speed.

Explanation:

Answer:

huh

Explanation:

The water level in the reservoir will rise to approximately 1.68 feet as a result of the storm. This calculation assumes vertical perimeter banks of the reservoir and provides an estimate of the expected water level rise resulting from the storm event.

To determine the rise in water level in the reservoir, we need to consider the ratio of the total runoff volume to the surface area of the reservoir. The rise in water level can be calculated using the formula:

Rise in water level = Total runoff volume / Reservoir surface area

Given information:

Total runoff volume = 32 acre-feet

Reservoir surface area = 19 acres

Converting acre-feet to cubic feet:

1 acre-foot = 43,560 cubic feet

Total runoff volume in cubic feet:

32 acre-feet * 43,560 cubic feet/acre-foot = 1,393,920 cubic feet

Calculating the rise in water level:

Rise in water level = 1,393,920 cubic feet / (19 acres * 43,560 square feet/acre)

= 1,393,920 cubic feet / 825,840 square feet

≈ 1.68 feet (rounded to two decimal places)

Therefore, the water level in the reservoir will rise to approximately 1.68 feet as a result of the storm.

Based on the given information of a total runoff volume of 32 acre-feet and a reservoir surface area of 19 acres, the rise in water level in the reservoir can be calculated. By converting the runoff volume to cubic feet and dividing it by the reservoir's surface area, we find that the water level will increase to approximately 1.68 feet. This calculation assumes vertical perimeter banks of the reservoir and provides an estimate of the expected water level rise resulting from the storm event.

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Answer:

(a)A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

The skateboard that moves a greater distance will have done more work than the one that moves a smaller distance.

Work is defined as the amount of energy required to move an object over a certain distance, and it is calculated by multiplying the force applied to the object by the distance over which the force is applied.

In this case, if the same force is applied to two skateboards, the skateboard that rolls across the room will have done more work than the other one that moves a few feet and comes to stop.

This is because the work done is directly proportional to the distance over which the force is applied, the skateboard that moves a greater distance will have done more work than the one that moves a smaller distance.

Note that work is a scalar quantity and not a vector one, it means that work can be positive or negative but the direction is not important, also the force applied and the distance over which the force is applied must be in the same direction.

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Answer:

A

Explanation:

Hope this helps. Please if you need more information let me know

      Maybe this graph can help?

Hello :)

Answer:

Made more accurate observations of planets than

anyone before him

hope this helps :) !!!

Tycho Brahe significantly advanced astronomy by making highly accurate observations of celestial bodies, developing the Tychonic system, and mentoring Johannes Kepler.

His extensive and precise observations of the positions of stars and planets, especially the supernova of 1572 and the comet of 1577, challenged the geocentric model of the universe.

The Tychonic system, which combined aspects of both the geocentric and heliocentric models, contributed to the eventual acceptance of the heliocentric model.

By mentoring Kepler, Tycho helped pave the way for Kepler's three laws of planetary motion, which further advanced our understanding of astronomy.

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